—Why Jack you look so tired!---Well I the house and I must finish the work tomorrow.A.

问题补充：

—Why, Jack, you look so tired!

---Well, I the house and I must finish the work tomorrow.

A. was painting

B. will be painting

C. have painted

D. have been painting

答案：

A. was painting

B. will be painting

C. have painted

(答案→)D. have been painting

解析：考查情景交际。“杰克，你为什么看起来这么累？”“我一直在刷房子，到明天我必须刷完。”根据句意可知，刷房子的动作截至说话时一直在做，还将继续下去。故用现在完成进行时。故选D。